A second-order reaction has a half-life of 12 s when the initial concentration of reactant is 0.98 M. The rate constant for this reaction is M-1s-1.

0.085 (Ms)⁻¹

Explanation:

Half life = 12 s

is the initial concentration = 0.98 M

Half life expression for second order kinetic is:

So,

k = 0.085 (Ms)⁻¹

The rate constant for this reaction is 0.085 (Ms)⁻¹ .

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